Trump says stupid things and doesn't apologize. Here's the actual quote in question, though Mr. Trump has a history making insulting offhand remarks about Hispanics.
"When Mexico sends its people, they're not sending their best. They're not sending you. They're not sending you. They're sending people that have lots of problems, and they're bringing those problems with us. They're bringing drugs. They're bringing crime. They're rapists. And some, I assume, are good people."
That's an awfully broad and undiplomatic brush for someone who wants to hold the highest elected office in the US. You don't think that's a racist remark?
For the rest, the GOP as a whole needs to recognize that the majority of the USA is not white, male and Christian any longer. If you don't want access to family planning services (you immediately jumped on abortion, but hey, how about access to Plan B, HPV vaccines or hormonal birth control?), to participate in a gay marriage or to use a bathroom where a trans person might one day relieve themselves, don't. But recognize that some people do want those things and your beliefs are not more important than their rights. Turns out, being against those things - which ARE matters of legal right, either by legislation or judgment, is a good way to get called out for misogyny and homophobia. If you choose to take those remarks as insults, stop associating with the people who keep adopting those ideas as policy positions. If you're proudly bigoted, at least own up to it.